The MT 5 manual lift & lay mount is made as a support for the MT 1 mount, it's designed to be used in the bed of a truck or any where that you choose to use your antenna in a manner that would require you to lay the antenna down. This mount is also 304 stainless steel.  Designed for use with the M100, M200, M300 & M400.   Not designed for use with the M40, M75, LT-HP, LT-II or BTA.